Display screen with an animated graphical user interface



FIG. 1 is a front view of the first image in a sequence for a display screen with an animated graphical user interface showing our new design;

FIG. 2 is the second image thereof;

FIG. 3 is the third image thereof;

FIG. 4 is the fourth image thereof;

FIG. 5 is the fifth image thereof;

FIG. 6 is the sixth image thereof;

FIG. 7 is the seventh image thereof; and,

FIG. 8 is the eighth image thereof.

The broken line showing of the display screen is for environmental purposes only and forms no part of the claimed design. 

The ornamental design for a display screen with an animated graphical user interface, as shown and described. 